Do you think the Banning of BB in Nigeria will work out?

All governments want to snoop on the phones. If you don't want police or government snooping then get an Android phone, and install Redphone + Textsecure for encrypted voice and text (Free). It's better than blackberry, because BB will hand over your info to Nigerian authorities I wouldn't trust them. BB is also using a single encryption key, with Android you use your own encryption key nobody else has access to it.

Be sure to encrypt your phone too. Pick a large password, then reboot phone. So you don't have to type in giant password everytime you want to unlock the screen, download a 3rd party screen unlocker from google play store (free). Install it and now you can pick a short unlock design, and if you reboot phone it's still encrypted, so have to enter long password.

They won't ban blackberry, India threatened the same thing and then BlackBerry gave them a snooping key so they can unlock everything and read it.